Delete row sig_87421588ff49 from signals

id sig_87421588ff49
event_id evt_bfd1f0020826
watcher_id NULL
signal_type market_headline_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source market_ingestor
reason_trace {"_evidence_event_ids":["evt_c72ff3cb0 ...
dedupe_key signal_enriched:market_headline_delta:5e4d7be6a8b1 ...
throttle_s 0
created_at 2026-04-17T22:22:44.956779+00:00
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